Refrigeration machine



,Filed Oct. 6, 1958 June 28, 1960 J. R. LEJK 2,942,436

REFRIGERATION MACHINE FIG.1

INVENTOR.

JOSEPH R. LEJK ATTORNEYS June 28, 1960 J. R. LEJK 2,942,436

' REFRIGERATION MACHINE Filed Oct. 6, 1958 2 Sheets-Sheet 2 H FIG. 2 |l1ll 82 42 26 o I I 32 34 3a 4 24 o o O 0 26 I 7 v r Q o o O 0 8 I K) as .'1 4|. o 1. I C 7s so 5 54 s2 70 53 o Q so 55 55 64 INVENTOR. 0 52 54 58 JOSEPH R. LEJK Fl 6. 3 ATTORNEYS REFRIGERATION -MACHINE Joseph R. Lejk, Onalaska, Wis., assignor to The Trane Company, La Crosse, Wis., a corporation of Wisconsin Filed Oct. '6, 1958, Ser. No. 765,468

'3'Claims, (Cl. 62-297) This invention relates to refrigeration machines and more particularly to refrigeration machines having a centrifugal compressor.

Refrigeration machines of this type are generally large and the parts can only be handled by lifting machines of capacities which are not usually available in equipment rooms in which these refrigeration machines are installed.

It is therefore an object of this invention to provide means on the machine for supporting the suction elbow and the suction cover of the compressor for movement outwardly from the compressor casing to provide access to the interior of the compressor.

It is another object of this invention to provide a guide support on the evaporator of a refrigeration machine to support the suction conduit and suction cover of the compressor for removal to provide access to the interior of the compressor.

It is another object of the invention to provide an adjustable track for supporting the suction conduit and suction cover of the compressor of a refrigeration machine.

It is another object of the invention to provide a track for the suction cover and suction elbowof a centrifugal compressor with the track extending at an angle to the plane of the attachingflanges on the suction elbow and suction cover in order to facilitate making gasketed joints at the flanges.

Other objects and advantages of the invention will appear as the specification proceeds to describelthe invention with reference to the accompanying drawings in which:

Fig. l is a front elevational view of the refrigeration machine of this invention with the suction elbow and suction cover in retracted position;

Fig. 2 is a partial plan view of the refrigeration machine; and

Fig. 3 is a partial end View of the refrigeration machine.

The compressor and the turbine 12 are mounted on a base having beams 14 and 16. The turbine 12 has a shaft (not shown) which extends into the compressor 10 and has a compressor impeller 11 mounted thereon.

Such general features of construction are shown in more detail in copending application of Joseph R. Lejk and Hugo Merta, Serial No. 743,797, filed June 23, 1958. It

should be understood that although the turbine 12 has been shown as one form of driving means for the compressor, other forms of drivers may beused. For instance, an electric motor may be used in place of the turbine 12.

The turbine 12 has an inlet 18 adapted to be connected to a source of steam or gas under pressure and .atgnt V I V 2 22 by bolts 26.

housing 22 has aidischarge outlet 28 which is connected to a condenser (not shown) from which the condensed gas flows to an evaporator 30. The evaporator 30 has an outlet 32 having a flange 34. A suction elbow 36 has at one end a flange 38. The flange 38 of suction elbow 36 is secured bybolts40 to flange 34 with a gasket 42 therebetween. The suction elbow 36 has at its other end a flange 44 which is secured by bolts 46 to flange 48'of suction cover 24.

A channel 50 is secured by bolts 52 to beam 14 and by bolts 54 to track 56. A channel 58 is secured by,

bolts 60 to beam 16 and by bolts 62 to track 64. A channel 66 is secured by'bolts 68 to track 56 and by bolts 70 to track 64.

Leveling screws 72 are threaded in tracks 56 and 64 and are adjustable to bring the tracks in supporting contact With the feet 74 and 76 of the suction cover 24 when it is in position on the housing 22. Tracks 56 and 64 have flanges 78 and'80, respectively, to prevent lateral displacement of the legs 74 and 76.

A channel shaped way 82 is secured as by welding to gussets 84 which are in turn secured to the evaporator 30 as by welding. A slide 86 is secured as by welds to the flange 38 of the suction elbow 36.

The Way 82 extends at an angle to the planes of the flanges 34 and 38 so that upon retraction or replacement of the suction elbow 36 and suction cover 24, the gasket 42 is not scuffed and destroyed.

When it is desired to gain access to the interior of the compressor 10, the bolts 26 and 40 are removed. The suction elbow 36 and suction cover 24 may then be moved outwardly from the compressor housing 22 by merely overcoming the sliding friction of the feet 74 and 76 on the tracks 78 and and the sliding friction of the slide 86 on the way 82. It should be understood that antifriction bearings can be used between the feet 74 and 76 and the tracks 78 and 80, and that anti- 1. A centrifugal refrigerating machine comprising a compressor housing, an impeller rotatably mounted in said compressor housing, means for driving said impeller, a base supporting said compressor housing and said driving means, a cover detachably secured to said compressor housing, track means on said base slidably supporting said cover, an evaporator, an outlet on said evaporator, an elbow having a firstplanar face detachably secured to said outlet and a second planar face detachably secured to saidcover, a way secured to said evaporator, a slide the first planar face of said elbow whereby movement of said elbow along said wayfwill move said elbow with respect to said outlet in a direction which has a component normal to the first planar face of said elbow.

2. A centrifugal refrigerating machine comprising a compressor housing, an impeller ,rotatably mounted in said compressor housing, means for driving said impeller,

a base supporting said compressor housing and said driving means, a cover detaohably secured to said compressor 'anzanv I Rate'n ted June 28,

A g'asket (not shown) is interposed between the housing22 and the suction cover 24. The

a planar faced outlet, an elbow for conducting refrigerant from said evaporator to said cover, said elbow having a first planar face detachably secured to the planar faced outlet of said evaporator and a second planar face detachably secured to said cover, away secured to said evaporator and means on said elbow movably supported on said way for movement along said way to support said elbow for movement on said evaporator.

3, A centrifugal refrigerating machine comprising a compressor housing, an impeller rotatably mounted in said compressor housing, means for driving said impeller, a base supporting said compressor housing and said driving means, a cover detachably secured to said compressor housing, track means on said base, means on said cover movably supported on said track means to support said cover for movement on said base, an evaporator having a planar faced outlet, an elbow for conducting refrigersupport said elbow for movement on said evaporator.

References Cited in the file of this patent UNITED STATES PATENTS 930,034 Boermel Aug. 3, 1909 933,116 Sackett Sept. 7, 1909 2,277,647 Jones Mar. 24, 1942 2,454,727 Wherry Nov. 23, 1948 2,513,679 Ritter July 4, 1950 2,828,759 Gerhart Apr. 1, 1958 

